netdev - Re: /128 link-local subnet on 6in4 (sit) tunnels?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20130327151210.GA23223@order.stressinduktion.org>
Date:	Wed, 27 Mar 2013 16:12:10 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Wilco Baan Hofman <wilco@...nhofman.nl>
Cc:	netdev@...r.kernel.org
Subject: Re: /128 link-local subnet on 6in4 (sit) tunnels?

On Tue, Mar 26, 2013 at 11:04:17PM +0100, Wilco Baan Hofman wrote:
> I was trying to get OSPFv3 working on NBMA 6in4 tunnel on linux 3.8, but
> it does not work. I noticed it uses a /128 fe80 link-local subnet
> instead of the rfc4213[1]-mandated /64.. This breaks bird (likely for
> other reasons), but also interoperability with cisco, which mandates
> OSPFv3 NBMA on link-local addresses.
> 
> So I was wondering, is there any particular reason for the use of a /128
> link-local or is this just a bug?

Can you show me the commands how you set up the tunnel. It does create /64 ll
with embedded ipv4 addresses for me here on v3.8.

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html